On 06/05/2012 03:32 PM, Konstantin Khlebnikov wrote: > > [all reporters added to CC] let's keep all in one thread > > In attachment two patches which might help to debug this regression: Hi Konstantin, the output after applying your 2 patches om top of current git tree is shown below. FWIW reverting commit 0fc9d10 on top of 99becf1 solves the issue for me. 2012-06-05T16:12:29.745+02:00 n22 kernel: ------------[ cut here ]------------ 2012-06-05T16:12:29.746+02:00 n22 kernel: WARNING: at mm/filemap.c:940 find_get_pages_contig+0x16a/0x1a0() 2012-06-05T16:12:29.746+02:00 n22 kernel: Hardware name: 6474B84 2012-06-05T16:12:29.746+02:00 n22 kernel: Modules linked in: loop fuse dm_mod usblp hid_generic hid_cherry i915 usbhid hid fbcon font bitblit softcursor drm_kms_helper drm fb fbdev intel_agp cfbcopyarea i2c_algo_bit intel_gtt 8250_pci 8250 cfbimgblt i2c_i801 sr_mod thinkpad_acpi hwmon video acpi_cpufreq nvram ac thermal sg evdev psmouse serial_core i2c_core cdrom agpgart button battery mperf processor wmi cfbfillrect [last unloaded: microcode] 2012-06-05T16:12:29.746+02:00 n22 kernel: Pid: 2359, comm: loop0 Not tainted 3.5.0-rc1-00037-g99becf1-dirty #21 2012-06-05T16:12:29.746+02:00 n22 kernel: Call Trace: 2012-06-05T16:12:29.746+02:00 n22 kernel: [<c102e632>] warn_slowpath_common+0x72/0xa0 2012-06-05T16:12:29.746+02:00 n22 kernel: [<c10c07aa>] ? find_get_pages_contig+0x16a/0x1a0 2012-06-05T16:12:29.746+02:00 n22 kernel: [<c10c07aa>] ? find_get_pages_contig+0x16a/0x1a0 2012-06-05T16:12:29.746+02:00 n22 kernel: [<c102e682>] warn_slowpath_null+0x22/0x30 2012-06-05T16:12:29.746+02:00 n22 kernel: [<c10c07aa>] find_get_pages_contig+0x16a/0x1a0 2012-06-05T16:12:29.746+02:00 n22 kernel: [<c11240fc>] ? splice_to_pipe+0xec/0x1f0 2012-06-05T16:12:29.746+02:00 n22 kernel: [<c1124907>] __generic_file_splice_read+0xe7/0x550 2012-06-05T16:12:29.746+02:00 n22 kernel: [<c1062508>] ? load_balance+0x88/0x5a0 2012-06-05T16:12:29.746+02:00 n22 kernel: [<c105e6b4>] ? update_cfs_load+0x284/0x290 2012-06-05T16:12:29.746+02:00 n22 kernel: [<f8494db4>] ? transfer_none+0x54/0x80 [loop] 2012-06-05T16:12:29.746+02:00 n22 kernel: [<f84945ba>] ? lo_splice_actor+0xaa/0xe0 [loop] 2012-06-05T16:12:29.747+02:00 n22 kernel: [<c1123430>] ? page_cache_pipe_buf_release+0x20/0x20 2012-06-05T16:12:29.747+02:00 n22 kernel: [<c1124e0c>] generic_file_splice_read+0x9c/0x100 2012-06-05T16:12:29.747+02:00 n22 kernel: [<c1124d70>] ? __generic_file_splice_read+0x550/0x550 2012-06-05T16:12:29.747+02:00 n22 kernel: [<c11238f5>] do_splice_to+0x65/0x80 2012-06-05T16:12:29.747+02:00 n22 kernel: [<c1123b65>] splice_direct_to_actor+0xb5/0x1f0 2012-06-05T16:12:29.747+02:00 n22 kernel: [<f8494c40>] ? loop_thread+0x510/0x510 [loop] 2012-06-05T16:12:29.747+02:00 n22 kernel: [<f84948b1>] loop_thread+0x181/0x510 [loop] 2012-06-05T16:12:29.747+02:00 n22 kernel: [<f84945f0>] ? lo_splice_actor+0xe0/0xe0 [loop] 2012-06-05T16:12:29.747+02:00 n22 kernel: [<f8494730>] ? do_lo_send_write+0xe0/0xe0 [loop] 2012-06-05T16:12:29.747+02:00 n22 kernel: [<c104cacc>] kthread+0x7c/0x90 2012-06-05T16:12:29.747+02:00 n22 kernel: [<c104ca50>] ? flush_kthread_worker+0xb0/0xb0 2012-06-05T16:12:29.747+02:00 n22 kernel: [<c1379cbe>] kernel_thread_helper+0x6/0x10 2012-06-05T16:12:29.747+02:00 n22 kernel: ---[ end trace 00cc617101264b7f ]--- 2012-06-05T16:12:29.784+02:00 n22 kernel: ------------[ cut here ]------------ 2012-06-05T16:12:29.785+02:00 n22 kernel: WARNING: at mm/filemap.c:940 find_get_pages_contig+0x16a/0x1a0() 2012-06-05T16:12:29.785+02:00 n22 kernel: Hardware name: 6474B84 2012-06-05T16:12:29.785+02:00 n22 kernel: Modules linked in: loop fuse dm_mod usblp hid_generic hid_cherry i915 usbhid hid fbcon font bitblit softcursor drm_kms_helper drm fb fbdev intel_agp cfbcopyarea i2c_algo_bit intel_gtt 8250_pci 8250 cfbimgblt i2c_i801 sr_mod thinkpad_acpi hwmon video acpi_cpufreq nvram ac thermal sg evdev psmouse serial_core i2c_core cdrom agpgart button battery mperf processor wmi cfbfillrect [last unloaded: microcode] 2012-06-05T16:12:29.785+02:00 n22 kernel: Pid: 2359, comm: loop0 Tainted: G W 3.5.0-rc1-00037-g99becf1-dirty #21 2012-06-05T16:12:29.785+02:00 n22 kernel: Call Trace: 2012-06-05T16:12:29.785+02:00 n22 kernel: [<c102e632>] warn_slowpath_common+0x72/0xa0 2012-06-05T16:12:29.785+02:00 n22 kernel: [<c10c07aa>] ? find_get_pages_contig+0x16a/0x1a0 2012-06-05T16:12:29.785+02:00 n22 kernel: [<c10c07aa>] ? find_get_pages_contig+0x16a/0x1a0 2012-06-05T16:12:29.785+02:00 n22 kernel: [<c102e682>] warn_slowpath_null+0x22/0x30 2012-06-05T16:12:29.785+02:00 n22 kernel: [<c10c07aa>] find_get_pages_contig+0x16a/0x1a0 2012-06-05T16:12:29.785+02:00 n22 kernel: [<c11240fc>] ? splice_to_pipe+0xec/0x1f0 2012-06-05T16:12:29.785+02:00 n22 kernel: [<c1124907>] __generic_file_splice_read+0xe7/0x550 2012-06-05T16:12:29.785+02:00 n22 kernel: [<c10610d5>] ? enqueue_entity+0xd5/0x210 2012-06-05T16:12:29.785+02:00 n22 kernel: [<c10599e5>] ? check_preempt_curr+0x65/0x90 2012-06-05T16:12:29.785+02:00 n22 kernel: [<c1059a40>] ? ttwu_do_wakeup+0x30/0x110 2012-06-05T16:12:29.785+02:00 n22 kernel: [<f8494db4>] ? transfer_none+0x54/0x80 [loop] 2012-06-05T16:12:29.785+02:00 n22 kernel: [<f84945ba>] ? lo_splice_actor+0xaa/0xe0 [loop] 2012-06-05T16:12:29.785+02:00 n22 kernel: [<c1123430>] ? page_cache_pipe_buf_release+0x20/0x20 2012-06-05T16:12:29.785+02:00 n22 kernel: [<c1124e0c>] generic_file_splice_read+0x9c/0x100 2012-06-05T16:12:29.786+02:00 n22 kernel: [<c1124d70>] ? __generic_file_splice_read+0x550/0x550 2012-06-05T16:12:29.786+02:00 n22 kernel: [<c11238f5>] do_splice_to+0x65/0x80 2012-06-05T16:12:29.786+02:00 n22 kernel: [<c1123b65>] splice_direct_to_actor+0xb5/0x1f0 2012-06-05T16:12:29.786+02:00 n22 kernel: [<f8494c40>] ? loop_thread+0x510/0x510 [loop] 2012-06-05T16:12:29.786+02:00 n22 kernel: [<f84948b1>] loop_thread+0x181/0x510 [loop] 2012-06-05T16:12:29.786+02:00 n22 kernel: [<f84945f0>] ? lo_splice_actor+0xe0/0xe0 [loop] 2012-06-05T16:12:29.786+02:00 n22 kernel: [<f8494730>] ? do_lo_send_write+0xe0/0xe0 [loop] 2012-06-05T16:12:29.786+02:00 n22 kernel: [<c104cacc>] kthread+0x7c/0x90 2012-06-05T16:12:29.786+02:00 n22 kernel: [<c104ca50>] ? flush_kthread_worker+0xb0/0xb0 2012-06-05T16:12:29.786+02:00 n22 kernel: [<c1379cbe>] kernel_thread_helper+0x6/0x10 2012-06-05T16:12:29.786+02:00 n22 kernel: ---[ end trace 00cc617101264b80 ]--- 2012-06-05T16:12:29.801+02:00 n22 kernel: ------------[ cut here ]------------ 2012-06-05T16:12:29.802+02:00 n22 kernel: WARNING: at mm/filemap.c:940 find_get_pages_contig+0x16a/0x1a0() 2012-06-05T16:12:29.802+02:00 n22 kernel: Hardware name: 6474B84 2012-06-05T16:12:29.802+02:00 n22 kernel: Modules linked in: loop fuse dm_mod usblp hid_generic hid_cherry i915 usbhid hid fbcon font bitblit softcursor drm_kms_helper drm fb fbdev intel_agp cfbcopyarea i2c_algo_bit intel_gtt 8250_pci 8250 cfbimgblt i2c_i801 sr_mod thinkpad_acpi hwmon video acpi_cpufreq nvram ac thermal sg evdev psmouse serial_core i2c_core cdrom agpgart button battery mperf processor wmi cfbfillrect [last unloaded: microcode] 2012-06-05T16:12:29.802+02:00 n22 kernel: Pid: 2359, comm: loop0 Tainted: G W 3.5.0-rc1-00037-g99becf1-dirty #21 2012-06-05T16:12:29.802+02:00 n22 kernel: Call Trace: 2012-06-05T16:12:29.802+02:00 n22 kernel: [<c102e632>] warn_slowpath_common+0x72/0xa0 2012-06-05T16:12:29.802+02:00 n22 kernel: [<c10c07aa>] ? find_get_pages_contig+0x16a/0x1a0 2012-06-05T16:12:29.802+02:00 n22 kernel: [<c10c07aa>] ? find_get_pages_contig+0x16a/0x1a0 2012-06-05T16:12:29.802+02:00 n22 kernel: [<c102e682>] warn_slowpath_null+0x22/0x30 2012-06-05T16:12:29.802+02:00 n22 kernel: [<c10c07aa>] find_get_pages_contig+0x16a/0x1a0 2012-06-05T16:12:29.802+02:00 n22 kernel: [<c11240fc>] ? splice_to_pipe+0xec/0x1f0 2012-06-05T16:12:29.802+02:00 n22 kernel: [<c1124907>] __generic_file_splice_read+0xe7/0x550 2012-06-05T16:12:29.802+02:00 n22 kernel: [<c1062508>] ? load_balance+0x88/0x5a0 2012-06-05T16:12:29.802+02:00 n22 kernel: [<c105e6b4>] ? update_cfs_load+0x284/0x290 2012-06-05T16:12:29.802+02:00 n22 kernel: [<f8494db4>] ? transfer_none+0x54/0x80 [loop] 2012-06-05T16:12:29.802+02:00 n22 kernel: [<f84945ba>] ? lo_splice_actor+0xaa/0xe0 [loop] 2012-06-05T16:12:29.802+02:00 n22 kernel: [<c1123430>] ? page_cache_pipe_buf_release+0x20/0x20 2012-06-05T16:12:29.802+02:00 n22 kernel: [<c1124e0c>] generic_file_splice_read+0x9c/0x100 2012-06-05T16:12:29.802+02:00 n22 kernel: [<c1124d70>] ? __generic_file_splice_read+0x550/0x550 2012-06-05T16:12:29.803+02:00 n22 kernel: [<c11238f5>] do_splice_to+0x65/0x80 2012-06-05T16:12:29.803+02:00 n22 kernel: [<c1123b65>] splice_direct_to_actor+0xb5/0x1f0 2012-06-05T16:12:29.803+02:00 n22 kernel: [<f8494c40>] ? loop_thread+0x510/0x510 [loop] 2012-06-05T16:12:29.803+02:00 n22 kernel: [<f84948b1>] loop_thread+0x181/0x510 [loop] 2012-06-05T16:12:29.803+02:00 n22 kernel: [<f84945f0>] ? lo_splice_actor+0xe0/0xe0 [loop] 2012-06-05T16:12:29.803+02:00 n22 kernel: [<f8494730>] ? do_lo_send_write+0xe0/0xe0 [loop] 2012-06-05T16:12:29.803+02:00 n22 kernel: [<c104cacc>] kthread+0x7c/0x90 2012-06-05T16:12:29.803+02:00 n22 kernel: [<c104ca50>] ? flush_kthread_worker+0xb0/0xb0 2012-06-05T16:12:29.803+02:00 n22 kernel: [<c1379cbe>] kernel_thread_helper+0x6/0x10 2012-06-05T16:12:29.803+02:00 n22 kernel: ---[ end trace 00cc617101264b81 ]--- 2012-06-05T16:12:30.038+02:00 n22 kernel: ------------[ cut here ]------------ 2012-06-05T16:12:30.039+02:00 n22 kernel: WARNING: at mm/filemap.c:940 find_get_pages_contig+0x16a/0x1a0() 2012-06-05T16:12:30.039+02:00 n22 kernel: Hardware name: 6474B84 2012-06-05T16:12:30.039+02:00 n22 kernel: Modules linked in: loop fuse dm_mod usblp hid_generic hid_cherry i915 usbhid hid fbcon font bitblit softcursor drm_kms_helper drm fb fbdev intel_agp cfbcopyarea i2c_algo_bit intel_gtt 8250_pci 8250 cfbimgblt i2c_i801 sr_mod thinkpad_acpi hwmon video acpi_cpufreq nvram ac thermal sg evdev psmouse serial_core i2c_core cdrom agpgart button battery mperf processor wmi cfbfillrect [last unloaded: microcode] 2012-06-05T16:12:30.039+02:00 n22 kernel: Pid: 2359, comm: loop0 Tainted: G W 3.5.0-rc1-00037-g99becf1-dirty #21 2012-06-05T16:12:30.039+02:00 n22 kernel: Call Trace: 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c102e632>] warn_slowpath_common+0x72/0xa0 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c10c07aa>] ? find_get_pages_contig+0x16a/0x1a0 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c10c07aa>] ? find_get_pages_contig+0x16a/0x1a0 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c102e682>] warn_slowpath_null+0x22/0x30 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c10c07aa>] find_get_pages_contig+0x16a/0x1a0 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c11240fc>] ? splice_to_pipe+0xec/0x1f0 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c1124907>] __generic_file_splice_read+0xe7/0x550 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c106ec6f>] ? ktime_get+0x5f/0xe0 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c105182e>] ? hrtimer_interrupt+0x16e/0x2a0 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c1035e5c>] ? irq_exit+0x5c/0xa0 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c1379e49>] ? smp_apic_timer_interrupt+0x59/0x88 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c1062508>] ? load_balance+0x88/0x5a0 2012-06-05T16:12:30.039+02:00 n22 kernel: [<c13792cd>] ? apic_timer_interrupt+0x31/0x38 2012-06-05T16:12:30.040+02:00 n22 kernel: [<c120d97f>] ? memcpy+0x1f/0x40 2012-06-05T16:12:30.040+02:00 n22 kernel: [<f8494db4>] ? transfer_none+0x54/0x80 [loop] 2012-06-05T16:12:30.040+02:00 n22 kernel: [<f84945ba>] ? lo_splice_actor+0xaa/0xe0 [loop] 2012-06-05T16:12:30.040+02:00 n22 kernel: [<c1123430>] ? page_cache_pipe_buf_release+0x20/0x20 2012-06-05T16:12:30.040+02:00 n22 kernel: [<c1124e0c>] generic_file_splice_read+0x9c/0x100 2012-06-05T16:12:30.040+02:00 n22 kernel: [<c1124d70>] ? __generic_file_splice_read+0x550/0x550 2012-06-05T16:12:30.040+02:00 n22 kernel: [<c11238f5>] do_splice_to+0x65/0x80 2012-06-05T16:12:30.040+02:00 n22 kernel: [<c1123b65>] splice_direct_to_actor+0xb5/0x1f0 2012-06-05T16:12:30.040+02:00 n22 kernel: [<f8494c40>] ? loop_thread+0x510/0x510 [loop] 2012-06-05T16:12:30.040+02:00 n22 kernel: [<f84948b1>] loop_thread+0x181/0x510 [loop] 2012-06-05T16:12:30.040+02:00 n22 kernel: [<f84945f0>] ? lo_splice_actor+0xe0/0xe0 [loop] 2012-06-05T16:12:30.040+02:00 n22 kernel: [<f8494730>] ? do_lo_send_write+0xe0/0xe0 [loop] 2012-06-05T16:12:30.040+02:00 n22 kernel: [<c104cacc>] kthread+0x7c/0x90 2012-06-05T16:12:30.040+02:00 n22 kernel: [<c104ca50>] ? flush_kthread_worker+0xb0/0xb0 2012-06-05T16:12:30.040+02:00 n22 kernel: [<c1379cbe>] kernel_thread_helper+0x6/0x10 2012-06-05T16:12:30.040+02:00 n22 kernel: ---[ end trace 00cc617101264b82 ]--- -- MfG/Sincerely Toralf Förster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
